Grapefruits are large, round subtropical citrus fruits with white, light pink or dark pink flesh. This fruit probably originated from a cross between an orange and grapefruit. Grapefruits are one of the largest citrus fruits. The redder the flesh, the sweeter the taste. Grapefruits contain a lot of dietary fibre and vitamin C.
Today's grapefruits look more and more like the grapefruit (Citrus maxima). Some known varieties are: Duncan', 'Foster', 'Thompson', 'Ruby', 'Red' and 'Marsh'. In Belgium, Suriname, and to a lesser extent in the Netherlands, grapefruit is also called (pink) grapefruit.
The grapefruit plant is usually 5-6 meters high, but can sometimes reach a height of 15 meters. The leaves are thin and dark green, and are up to 15 cm long. The flowers are about 5 cm long, white, and have 4 petals. The fruit has a yellow skin and a diameter of 10-15 cm. The flesh is white, yellow or pink, depending on the cultivar, and the pulp is divided into segments. As with all citrus fruit, the taste is acidic, but also slightly bitter. Grapefruits are also used in weight loss diets, assuming that they promote metabolism and fat burning.